<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>原型链成员查找规则</title>
</head>
<body>
  <script>
    function Star (uname, age) {
      this.uname = uname
      this.age = age
    }

    Star.prototype.sing = function () {
      console.log('我会唱歌')
    }
    Star.prototype.sex = '女'
    // Object.prototype.sex = '男'
    var ldh = new Star('刘德华', 18)
    ldh.sex = '男'
    console.log(ldh.sex)
    console.log(Object.prototype)
    console.log(ldh)
    console.log(Star.prototype)
    console.log(ldh.toString())
  </script>
</body>
</html>